Stock Photo - Storm chasers with Project Vortex 2 watch a distant wall cloud and supercell in Goshen County, Wyoming, June 5, 2009 Project Vortex 2 is a two year National Science Foundation and NOAA funded science mission to study tornadoes and supercell thunderstorms

Stock Photo: Storm chasers with Project Vortex 2 watch a distant wall cloud and supercell in Goshen County, Wyoming, June 5, 2009  Project Vortex 2 is a two year National.

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